The SunR. Bentley, 1870 - 296 páginas |
Términos y frases comunes
according angle aphelion apparent diameter apparent dimensions appear Arago Aristarchus of Samos astronomers atmosphere axis Balfour Stewart brilliancy calculation cause celestial body central orb centre century chemical clouds coloured comets dark diurnal motion Earth edge entire equal equator existence faculæ Galileo gaseous glass gravitation heat-rays helioscopes Herschel horizon incandescent Jupiter latitude layer Léon Foucault less light and heat lines luminous mass matter mean distance measure Mercury Milky Moon naked eye Neptune nucleus orbit pass penumbra perihelion period phenomena photosphere physical planetary planets portion present produced prominences proper motion quantity of heat refracting telescope regions rotatory motion round the Sun satellites seen siderostat solar disc solar globe solar heat solar light solar rays solar spots space spectrum sphere stars sun-spots Sun's disc Sun's distance Sun's rotation Sun's surface telescope temperature terrestrial theory tion Uranus vapour various velocity Venus visible whilst William Herschel
Pasajes populares
Página 283 - The world was void, The populous and the powerful - was a lump, Seasonless, herbless, treeless, manless, lifeless A lump of death - a chaos of hard clay.
Página 283 - And they were enemies; they met beside The dying embers of an altar-place Where had been heap'da mass of holy things For an unholy usage; they raked up, And shivering scraped with their cold skeleton hands The feeble ashes, and their feeble breath Blew for a little life, and made a flame Which was a mockery; then they lifted up Their eyes as it grew lighter, and beheld Each other's aspects - saw, and shriek'd, and died Even of their mutual hideousness they died, Unknowing who he was upon whose brow...
Página 283 - Of famine fed upon all entrails — men Died, and their bones were tombless as their flesh; The meagre by the meagre were devoured. Even dogs assailed their masters — all save one, And he was faithful to a corse, and kept The birds and beasts and famished men at bay. Till hunger clung them or the dropping dead Lured their lank jaws!
Página 26 - ... if the total quantity of heat which the earth receives from the sun in the course of a year were uniformly distributed over all points of the globe, and were employed without loss in dissolving ice, it would melt a stratum which would have the above thickness.
Página 283 - Ships, sailorless, lay rotting on the sea, And their masts fell down piecemeal: as they dropped They slept on the abyss, without a surge ; The waves were dead; the tides were in their grave; The moon, their mistress, had expired before; The winds were withered in the stagnant air, And the clouds perished: Darkness had no need Of aid from them — she was the universe.
Página 283 - Lured their lank jaws; himself sought out no food, But with a piteous and perpetual moan, And a quick desolate cry, licking the hand Which answer'd not with a caress - he died. The crowd was famish'd by degrees; but two Of an enormous city did survive, And they were enemies...
Página 148 - SD ; increasing rapidly in passing from one to the other direction, just as we see a slight haze in the atmosphere thickening into a decided fogbank near the horizon, by the rapid increase of the mere length of the visual ray.
Página 251 - A spectroscope was used ; a narrow slit was inserted after the train of prisms before the object-glass of the little telescope. This slit limited the light entering the telescope to that of the refrangibility of the part of the spectrum immediately about the bright line coincident with o.
Página 31 - If the total quantity of heat, emitted by the sun, -were exclusively employed in melting a stratum of ice, applied upon the globe of the sun, and enveloping it on every side, that...
Página 31 - Pouillet, the quantity of heat given out by the sun in a year is equal to that which would be produced by the combustion of a stratum of coal seventeen miles in thickness; and if the sun's capacity for heat be assumed equal to that of water, and the heat be supposed to be drawn uniformly from its entire mass, its temperature would thereby undergo a diminution of 2°.4 Fahr, 'annually.